<template>
    <div>
        <div class="user-info-head" @click="editCropper()"><img class="img-circle img-lg" title="点击上传头像"
                                                                v-bind:src="options.img"/></div>
        <el-dialog :close-on-click-modal="false" :title="title" :visible.sync="open" append-to-body width="800px"
                   @close="closeDialog"
                   @opened="modalOpened">
            <el-row>
                <el-col :md="12" :style="{height: '350px'}" :xs="24">
                    <vue-cropper
                        v-if="visible"
                        ref="cropper"
                        :autoCrop="options.autoCrop"
                        :autoCropHeight="options.autoCropHeight"
                        :autoCropWidth="options.autoCropWidth"
                        :fixedBox="options.fixedBox"
                        :img="options.img"
                        :info="true"
                        @realTime="realTime"
                    />
                </el-col>
                <el-col :md="12" :style="{height: '350px'}" :xs="24">
                    <div class="avatar-upload-preview">
                        <img :src="previews.url" :style="previews.img"/>
                    </div>
                </el-col>
            </el-row>
            <br/>
            <el-row>
                <el-col :lg="2" :md="2">
                    <el-upload :before-upload="beforeUpload" :http-request="requestUpload" :show-file-list="false"
                               action="#">
                        <el-button size="small">
                            选择
                            <i class="el-icon-upload el-icon--right"></i>
                        </el-button>
                    </el-upload>
                </el-col>
                <el-col :lg="{span: 1, offset: 2}" :md="2">
                    <el-button icon="el-icon-plus" size="small" @click="changeScale(1)"></el-button>
                </el-col>
                <el-col :lg="{span: 1, offset: 1}" :md="2">
                    <el-button icon="el-icon-minus" size="small" @click="changeScale(-1)"></el-button>
                </el-col>
                <el-col :lg="{span: 1, offset: 1}" :md="2">
                    <el-button icon="el-icon-refresh-left" size="small" @click="rotateLeft()"></el-button>
                </el-col>
                <el-col :lg="{span: 1, offset: 1}" :md="2">
                    <el-button icon="el-icon-refresh-right" size="small" @click="rotateRight()"></el-button>
                </el-col>
                <el-col :lg="{span: 2, offset: 6}" :md="2">
                    <el-button size="small" type="primary" @click="uploadImg()">提 交</el-button>
                </el-col>
            </el-row>
        </el-dialog>
    </div>
</template>

<script>
import store from "@/store";
import {VueCropper} from "vue-cropper";
import {uploadAvatar} from "@/api/system/user";

export default {
    components: {VueCropper},
    props: {
        user: {
            type: Object
        }
    },
    data () {
        return {
            // 是否显示弹出层
            open: false,
            // 是否显示cropper
            visible: false,
            // 弹出层标题
            title: "修改头像",
            options: {
                img: store.getters.avatar, //裁剪图片的地址
                autoCrop: true, // 是否默认生成截图框
                autoCropWidth: 200, // 默认生成截图框宽度
                autoCropHeight: 200, // 默认生成截图框高度
                fixedBox: true, // 固定截图框大小 不允许改变
                filename: ''
            },
            previews: {}
        };
    },
    methods: {
        // 编辑头像
        editCropper () {
            this.open = true;
        },
        // 打开弹出层结束时的回调
        modalOpened () {
            this.visible = true;
        },
        // 覆盖默认的上传行为
        requestUpload () {
        },
        // 向左旋转
        rotateLeft () {
            this.$refs.cropper.rotateLeft();
        },
        // 向右旋转
        rotateRight () {
            this.$refs.cropper.rotateRight();
        },
        // 图片缩放
        changeScale (num) {
            num = num || 1;
            this.$refs.cropper.changeScale(num);
        },
        // 上传预处理
        beforeUpload (file) {
            if (file.type.indexOf("image/") == -1) {
                this.$modal.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
            } else {
                const reader = new FileReader();
                reader.readAsDataURL(file);
                reader.onload = () => {
                    this.options.img = reader.result;
                    this.options.filename = file.name;
                };
            }
        },
        // 上传图片
        uploadImg () {
            this.$refs.cropper.getCropBlob(data => {
                let formData = new FormData();
                console.log(this.options.filename)
                formData.append("avatarfile", data, this.options.filename);
                uploadAvatar(formData).then(response => {
                    this.open = false;
                    this.options.img = response.data.imgUrl;
                    store.commit('SET_AVATAR', this.options.img);
                    this.$modal.msgSuccess("修改成功");
                    this.visible = false;
                });
            });
        },
        // 实时预览
        realTime (data) {
            this.previews = data;
        },
        // 关闭窗口
        closeDialog () {
            this.options.img = store.getters.avatar
            this.visible = false;
        }
    }
};
</script>
<style lang="scss" scoped>
.user-info-head {
    position: relative;
    display: inline-block;
    height: 120px;
}

.user-info-head:hover:after {
    content: '+';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    color: #eee;
    background: rgba(0, 0, 0, 0.5);
    font-size: 24px;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    cursor: pointer;
    line-height: 110px;
    border-radius: 50%;
}
</style>
